Nullify the election.
Start all over.
Voter ID mandatory.
All registered voters are given a non duplicating card with a number, all voting goes into a server farm, my suggestion is the one that Homeland Security has in Utah. It will be recorded instantly how many times a voter has voted. Actually when a voter does vote the card number and RFID chip is also changed rendering it unusable.
Hold the actual voting stations at places controlled by the National Guard, no UN inspectors, no NAACP, no Black Panthers.
All voting done on Election Day. No early or absentee voting.
No SCYTL.
Fingertips will be examined for fake peel-off fingerprints belonging to other people (you think they haven’t thought of this already? There are databases of people’s fingerprints out there).
If I have to sign my ballot in my own blood, I’ll do so if it means my vote will be counted fairly.